Senior Full Stack Developer (Angular & Node.js)
Kraków, Lesser Poland Voivodeship, Polska, Gdańsk, Pomeranian Voivodeship, PolskaKey offer highlights
Min. 5 years of experience
Frontend: HTML, CSS, JavaScript
Backend: Java / .NET / Node / Python
Full-time
Hybrid model - partly remote
Description
We're seeking a Senior Full Stack Developer (Angular & Node.js) to become part of our team. In this position, you'll architect, develop, and support modern web applications and backend services powering an enterprise AI-driven platform. The role covers frontend interfaces, RESTful API development, database architecture, and streaming solution integration. You'll own features from start to finish while working within a collaborative Agile framework, focusing on scalable, high-quality, maintainable code. Responsibilities Create, code, test, and launch new features spanning both frontend and backend systems Create responsive and accessible Angular interfaces that connect seamlessly with NestJS APIs Build RESTful microservices supporting session handling, streaming capabilities, and platform integrations Design and fine-tune PostgreSQL schemas, queries, and ORM-driven data layers Maintain code reliability and quality through comprehensive unit and integration tests Support CI/CD pipeline development and adherence to application security standards Diagnose and fix issues spanning the entire stack, from UI to API to database Work in close partnership with product managers, UX designers, and platform engineers to deliver complete features Take part in code reviews and uphold team coding standards Requirements 5+ years of experience in software development Demonstrated hands-on skills in Angular, TypeScript, HTML5, CSS3, and responsive design principles Established expertise in NestJS, Node.js, RESTful API creation, and PostgreSQL performance tuning Strong grasp of ORMs like TypeORM along with relational database design Background using RxJS, state management approaches (NgRx or equivalent), and asynchronous UI patterns Comfort working with reusable UI components and shared Angular libraries within monorepo setups Familiarity with testing tools such as Jest and Karma/Jasmine Hands-on experience with Git-based workflows and CI/CD practices Awareness of authentication/authorization approaches (JWT, OAuth/OIDC) and security fundamentals Capability to navigate multiple codebases and resolve issues from end to end English language skills at B2 level or above Nice to have Background working with Docker, microservices design, and cloud environments (Azure or AWS) Exposure to real-time or streaming APIs like SSE Experience integrating AI or LLM technologies, including multi-agent systems and workflow-driven conversational tools Understanding of Nx monorepos, feature flag tools, or enterprise portal design Prior work in session management/observability or within energy and utility sectors
Requirements
5+ years of experience in software development
Demonstrated hands-on skills in Angular, TypeScript, HTML5, CSS3, and responsive design principles
Established expertise in NestJS, Node.js, RESTful API creation, and PostgreSQL performance tuning
Strong grasp of ORMs like TypeORM along with relational database design
Background using RxJS, state management approaches (NgRx or equivalent), and asynchronous UI patterns
Comfort working with reusable UI components and shared Angular libraries within monorepo setups
Familiarity with testing tools such as Jest and Karma/Jasmine
Hands-on experience with Git-based workflows and CI/CD practices
Awareness of authentication/authorization approaches (JWT, OAuth/OIDC) and security fundamentals
Capability to navigate multiple codebases and resolve issues from end to end
English language skills at B2 level or above
Responsibilities
Create, code, test, and launch new features spanning both frontend and backend systems
Create responsive and accessible Angular interfaces that connect seamlessly with NestJS APIs
Build RESTful microservices supporting session handling, streaming capabilities, and platform integrations
Design and fine-tune PostgreSQL schemas, queries, and ORM-driven data layers
Maintain code reliability and quality through comprehensive unit and integration tests
Support CI/CD pipeline development and adherence to application security standards
Diagnose and fix issues spanning the entire stack, from UI to API to database
Work in close partnership with product managers, UX designers, and platform engineers to deliver complete features
Take part in code reviews and uphold team coding standards
Seniority
Senior
Nice to have
Background working with Docker, microservices design, and cloud environments (Azure or AWS)
Exposure to real-time or streaming APIs like SSE
Experience integrating AI or LLM technologies, including multi-agent systems and workflow-driven conversational tools
Understanding of Nx monorepos, feature flag tools, or enterprise portal design
Prior work in session management/observability or within energy and utility sectors
Keywords / Skills